Volcano earthquake report for Monday, 20 Feb 2023
World map showing volcanoes with shallow (less than 50 km) earthquakes within 20 km radius during the past 24 hours on 20 Feb 2023 Number in brackets indicate nr of quakes.

Quakes detected near: Agung (1 quake mag 3.0), Aniakchak (1 quake mag 1.0), Bardarbunga (1 quake mag 1.5), Barva (5 quakes between mag 3.0-3.4), Clear Lake (29 quakes between mag 0.3-1.5), Coatepeque (1 quake mag 3.1)
Coso (1 quake mag 1.0), Eldey (1 quake mag 1.8), Galeras (1 quake mag 3.0), Grímsvötn (3 quakes between mag 1.0-1.5), Herdubreid (6 quakes between mag 0.3-1.1), Hrómundartindur (6 quakes between mag 0.5-1.0), Katla (3 quakes between mag 0.8-2.1), Kilauea (1 quake mag 2.7), Kusatsu-Shirane (1 quake mag 3.3), Long Valley (1 quake mag 1.7), Mount Shasta (1 quake mag 3.0), Poas (6 quakes between mag 2.9-4.1), Puyehue-Cordón Caulle (1 quake mag 3.0), Ragang (1 quake mag 2.6), Reykjanes (1 quake mag 1.3), Salton Buttes (4 quakes between mag 1.2-1.8), Santo Tomas (1 quake mag 2.2), Snowy Mountain (1 quake mag 1.1), Sousaki (2 quakes between mag 2.1-2.3), Taupo (1 quake mag 1.1), Tenerife (2 quakes between mag 0.8-1.1), Tenorio (1 quake mag 2.7), Terceira (1 quake mag 2.0), Tjörnes Fracture Zone (20 quakes between mag 0.6-2.8), White Island (1 quake mag 2.3) (updated 23h50)

Note: Earthquakes within 20 km from and at depths less than 50 km under active volcanoes are reported. The list is not complete because many volcanoes are not monitored and/or seismic data in high resolution is not available publicly.

Volcanoes with recent earthquakes above magnitude 2 or more than 10 quakes are listed below:



Agung volcano (Bali): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 17 km distance SSW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 42 km northeast of Nusa Dua, Bali, Indonesia, Feb 20, 2023 2:53 pm (GMT +8) (17 km SSW)
All earthquakes at Agung

Barva volcano (Costa Rica): 5 earthquakes up to magnitude 3.4

5 earthquakes occurred near (under) the volcano during 13 hours, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 9.0 and 3.0 km.
Earthquake details:
3.4 quake Provincia de Heredia, 35 km north of San Jose, San José, Costa Rica, Feb 20, 2023 7:44 am (GMT -6) (13 km N)
3.2 quake Provincia de Heredia, 32 km north of San Jose, San José, Costa Rica, Feb 20, 2023 3:57 am (GMT -6) (10 km NNW)
3.1 quake Provincia de Alajuela, 36 km north of San Jose, San José, Costa Rica, Feb 19, 2023 11:22 pm (GMT -6) (14 km N)
3.0 quake Provincia de Heredia, 34 km north of San Jose, San José, Costa Rica, Feb 20, 2023 12:03 pm (GMT -6) (11 km N)
3.0 quake Provincia de Heredia, 34 km north of San Jose, San José, Costa Rica, Feb 20, 2023 12:03 am (GMT -6) (12 km N)
All earthquakes at Barva

Clear Lake volcano (California): 29 earthquakes up to magnitude 1.5

Possible earthquake swarm: 29 earthquakes occurred near (under) the volcano during 22 hours, the last being recorded quake 1 hour 48 minutes ago. Hypocenter depths ranged between 3.1 and 0.2 km.
Earthquake details: (only 5 largest)
1.5 quake 6km W of Cobb, CA, Feb 19, 2023 8:57 pm (GMT -8) (17 km S)
1.5 quake 8km NW of The Geysers, CA, Feb 20, 2023 12:27 am (GMT -8) (16 km SSW)
1.3 quake 2km NNW of The Geysers, CA, Feb 19, 2023 11:05 pm (GMT -8) (19 km S)
1.2 quake 6km NW of The Geysers, CA, Feb 20, 2023 1:51 am (GMT -8) (17 km S)
1.1 quake 8km NW of The Geysers, CA, Feb 19, 2023 3:54 pm (GMT -8) (16 km SSW)
All earthquakes at Clear Lake

Coatepeque volcano (El Salvador): magnitude 3.1 earthquake

A magnitude 3.1 earthquake occurred at the volcano 9 hours ago. The quake, which might be volcanic in origin, was located at a depth of 38.0 km depth at 17 km distance SSE from the volcano.
Earthquake details:
3.1 quake Departamento de La Libertad, 32 km west of San Salvador, El Salvador, Feb 20, 2023 9:17 am (GMT -6) (17 km SSE)
All earthquakes at Coatepeque

Galeras volcano (Colombia): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 10 km distance NNW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 17 km northwest of Pasto, Departamento de Nariño, Colombia, Feb 20, 2023 2:00 am (GMT -5) (10 km NNW)
All earthquakes at Galeras

Katla volcano (Iceland): 3 earthquakes up to magnitude 2.1

3 earthquakes occurred near (under) the volcano during 11 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 1.5 and 0.1 km.
Earthquake details:
2.1 quake Iceland: 1.9 Km E of Goðabunga Feb 20, 2023 3:41 pm (GMT +0) (8 km W)
1.5 quake Iceland: 1.4 Km NNW of Hábunga Feb 20, 2023 4:54 am (GMT +0) (5 km SSW)
0.8 quake Iceland: 1.9 Km ESE of Goðabunga Feb 20, 2023 3:41 pm (GMT +0) (8 km W)
All earthquakes at Katla

Kilauea volcano (Hawai'i (Big Island)): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.4 km depth at 19 km distance ESE from the volcano.
Earthquake details:
2.7 quake 28 mi south of Hilo, Hawaii County, USA, Feb 19, 2023 9:13 pm (GMT -10) (19 km ESE)
All earthquakes at Kilauea

Kusatsu-Shirane volcano (Honshu): magnitude 3.3 earthquake

A magnitude 3.3 earthquake occurred at the volcano 17 hours ago. The quake, which might be volcanic in origin, was located at a depth of 6.4 km depth at 15 km distance NW from the volcano.
Earthquake details:
3.3 quake 20 km east of Nagano, Japan, Feb 20, 2023 3:34 pm (GMT +9) (15 km NW)
All earthquakes at Kusatsu-Shirane

Mount Shasta volcano (California): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 1 hour 20 minutes ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 16 km distance W from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): 13 km northwest of Mount Shasta, Siskiyou County, California, USA, Feb 20, 2023 2:30 pm (GMT -8) (16 km W)
All earthquakes at Mount Shasta

Poas volcano (Costa Rica): 6 earthquakes up to magnitude 4.1

6 earthquakes occurred near (under) the volcano during 12 hours, the last being recorded quake 8 hours ago. Hypocenter depths ranged between 5.0 and 3.0 km.
Earthquake details: (only 5 largest)
4.1 quake Provincia de Heredia, 33 km north of San Jose, San José, Costa Rica, Feb 20, 2023 3:15 am (GMT -6) (9 km ENE)
4.0 quake Provincia de Alajuela, 37 km north of San Jose, San José, Costa Rica, Feb 19, 2023 10:30 pm (GMT -6) (14 km ENE)
3.8 quake Provincia de Heredia, 33 km north of San Jose, San José, Costa Rica, Feb 20, 2023 3:57 am (GMT -6) (9 km ENE)
3.3 quake Provincia de Heredia, 32 km north of San Jose, San José, Costa Rica, Feb 20, 2023 3:15 am (GMT -6) (10 km E)
3.2 quake Provincia de Heredia, 32 km north of San Jose, San José, Costa Rica, Feb 20, 2023 10:07 am (GMT -6) (10 km E)
All earthquakes at Poas

Puyehue-Cordón Caulle volcano (Central Chile and Argentina): magnitude 3.0 earthquake

A magnitude 3.0 earthquake occurred at the volcano 16 hours ago. The quake, which might be volcanic in origin, was located at a depth of 10.0 km depth at 2 km distance NNW from the volcano.
Earthquake details:
Reported seismic-like event (likely no quake): Near Puyehue, Los Ríos Region, Chile, Feb 20, 2023 4:47 am (GMT -3) (2 km NNW)
All earthquakes at Puyehue-Cordón Caulle

Ragang volcano (Mindanao): magnitude 2.6 earthquake

A magnitude 2.6 earthquake occurred at the volcano 6 hours ago. The quake, which might be volcanic in origin, was located at a depth of 7.0 km depth at 18 km distance E from the volcano.
Earthquake details:
2.6 quake 1.7 km southwest of Wao, Lanao del Sur, Mindanao Musulman, Philippines, Feb 21, 2023 1:39 am (GMT +8) (18 km E)
All earthquakes at Ragang

Santo Tomas volcano (Luzon Island): magnitude 2.2 earthquake

A magnitude 2.2 earthquake occurred at the volcano 14 hours ago. The quake, which might be volcanic in origin, was located at a depth of 34.0 km depth at 14 km distance S from the volcano.
Earthquake details:
2.2 quake Ilocos, 23 km south of Baguio City, Province of Benguet, Cordillera, Philippines, Feb 20, 2023 5:29 pm (GMT +8) (14 km S)
All earthquakes at Santo Tomas

Sousaki volcano (Greece): 2 earthquakes up to magnitude 2.3

2 earthquakes occurred near (under) the volcano during 1 hour 17 minutes, the last being recorded quake 6 hours ago. Hypocenter depths ranged between 14.3 and 14.1 km.
Earthquake details:
2.3 quake 24 km southeast of Corinto, Corinthia, Peloponnese, Greece, Feb 20, 2023 8:15 pm (GMT +2) (16 km SSE)
2.1 quake Aegean Sea, 22 km southeast of Corinto, Corinthia, Peloponnese, Greece, Feb 20, 2023 6:58 pm (GMT +2) (14 km SSE)
All earthquakes at Sousaki

Tenorio volcano (Costa Rica): magnitude 2.7 earthquake

A magnitude 2.7 earthquake occurred at the volcano 22 hours ago. The quake, which might be volcanic in origin, was located at a depth of 5.0 km depth at 10 km distance SE from the volcano.
Earthquake details:
2.7 quake Provincia de Alajuela, 26 km northeast of Canas, Costa Rica, Feb 19, 2023 8:08 pm (GMT -6) (10 km SE)
All earthquakes at Tenorio

Tjörnes Fracture Zone volcano (Iceland): 20 earthquakes up to magnitude 2.8

Possible earthquake swarm: 20 earthquakes occurred near (under) the volcano during 20 hours, the last being recorded quake 23 minutes ago. Hypocenter depths ranged between 15.2 and 2.4 km.
Earthquake details: (only 5 largest)
2.8 quake Iceland: 31.9 Km WNW of Kópasker Feb 20, 2023 3:26 am (GMT +0) (12 km N)
2.6 quake Iceland: 28.6 Km W of Kópasker Feb 20, 2023 6:44 pm (GMT +0) (1 km NNE)
2.2 quake Iceland: 31.1 Km WNW of Kópasker Feb 20, 2023 3:21 am (GMT +0) (11 km N)
2.2 quake Iceland: 28.7 Km W of Kópasker Feb 20, 2023 6:41 pm (GMT +0) (1 km N)
2.1 quake Iceland: 31.6 Km WNW of Kópasker Feb 20, 2023 3:24 am (GMT +0) (11 km N)
All earthquakes at Tjörnes Fracture Zone

White Island volcano (New Zealand): magnitude 2.3 earthquake

A magnitude 2.3 earthquake occurred at the volcano 18 hours ago. The quake, which might be volcanic in origin, was located at a depth of 37.0 km depth at 3 km distance SW from the volcano.
Earthquake details:
2.3 quake South Pacific Ocean, 48 km north of Whakatane, Bay of Plenty, New Zealand, Feb 20, 2023 6:32 pm (GMT +13) (3 km SW)
All earthquakes at White Island
https://www.volcanodiscovery.com/earthquakes-volcanoes/news/204594/Volcano-earthquake-report-for-Monday-20-Feb-2023.html